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A298774 Number of nX7 0..1 arrays with every element equal to 1, 2, 4, 5 or 8 king-move adjacent elements, with upper left element zero. 1

%I #4 Jan 26 2018 08:45:34

%S 8,99,245,2359,11657,61333,484813,2887678,18497464,127977516,

%T 830209200,5490680497,36705295118,242989778508,1615075659957,

%U 10732935729937,71283281214068,473870950797066,3148048592750846,20916953345403645

%N Number of nX7 0..1 arrays with every element equal to 1, 2, 4, 5 or 8 king-move adjacent elements, with upper left element zero.

%C Column 7 of A298775.

%H R. H. Hardin, <a href="/A298774/b298774.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=6

%e ..0..1..0..0..0..0..1. .0..1..1..1..1..1..0. .0..1..0..0..0..0..1

%e ..0..0..1..1..1..1..0. .1..0..0..0..0..0..1. .1..0..0..0..1..0..1

%e ..0..0..1..1..1..1..0. .1..0..0..0..0..0..1. .0..1..1..1..0..0..1

%e ..0..0..1..1..1..1..0. .1..0..0..0..0..0..1. .0..1..1..1..0..0..1

%e ..0..0..1..1..1..1..0. .0..1..1..1..1..1..0. .0..1..1..1..0..0..1

%e ..0..1..0..0..0..0..1. .1..0..1..1..1..1..1. .1..0..0..0..1..1..0

%Y Cf. A298775.

%K nonn

%O 1,1

%A _R. H. Hardin_, Jan 26 2018

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Last modified April 24 03:08 EDT 2024. Contains 371918 sequences. (Running on oeis4.)